Speaker
Dr
Pipat Ruankham
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
Description
Photovoltaic performance of hybrid ZnO nanorods (ZnO NRs)/ polymer solar cells is enhanced through the addition of ZnO nanoparticles (ZnO NPs) into poly(3-hexylthiophene) (P3HT) absorber layer. A mixture of ZnO NPs:P3HT, acting as photo-active layer, is coated onto ZnO NRs, serving as electron acceptor, by spin-coating technique. The ZnO NPs/P3HT blend is able to infiltrate into the interrod space, as confirmed by field emission scanning electron microscopy (FE-SEM) observation. The ZnO NPs/P3HT (13% by volume) blend-coated ZnO NR device shows the maximum power conversion efficiency of 1.02%, which is higher than that of the pristine ZnO NRs/P3HT device (0.26%). The enhancement is mainly attributed to the larger ZnO/P3HT interface area and higher charge collection, as observed by an increase of the external quantum efficiency.
Author
Dr
Pipat Ruankham
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
Co-author
Prof.
Takashi Sagawa
(Graduate School of Energy Science, Kyoto University, Kyoto, JAPAN 606-8501)
